http://wiki.inthewings.net/index.php?action=history&feed=atom&title=COP_2121_IntroductionCOP 2121 Introduction - Revision history2026-05-06T09:04:08ZRevision history for this page on the wikiMediaWiki 1.33.0http://wiki.inthewings.net/index.php?title=COP_2121_Introduction&diff=1842&oldid=prevJka: /* Program Development Process */2007-02-22T19:42:04Z<p><span dir="auto"><span class="autocomment">Program Development Process</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 19:42, 22 February 2007</td>
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</table>Jkahttp://wiki.inthewings.net/index.php?title=COP_2121_Introduction&diff=1841&oldid=prevJka at 19:41, 22 February 20072007-02-22T19:41:42Z<p></p>
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==Course Objectives==<br />
* Understand how to develop and implement a program in the COBOL language<br />
* Understand various forms of data representation and structures supported by the COBOL language<br />
* Understand the syntax and semantics of the COBOL language<br />
* Understand the appropriate applications (typically business) of the COBOL language<br />
==Introduction==<br />
* What is a computer program?<br />
** A set of instructions that enables a computer to do some task<br />
* Two types of computer programs<br />
** Operating system programs - control overall operations of computer<br />
** Applications programs - perform tasks required by users<br />
==Applications Programs==<br />
* Written by applications programmer<br />
* May provide quick solution to one-time prblem<br />
** Displaying average grade for set of exam scores<br />
* Or may be run on regularly scheduled basis<br />
** Program to print student transcripts each semester<br />
* Customized<br />
** Written for specific users like doctors, car dealerships<br />
** Necessary if user has special requirements<br />
* Packages<br />
** Written for general user who needs program to perform standard tasks<br />
*** Standard tasks include budgeting, scheduling payroll, etc.<br />
** Cheaper, easier than writing customized program<br />
==Program Languages==<br />
* Machine Language<br />
** Only language computer understands<br />
** All programs executed on computer must be in machine language<br />
** Machine language programs are difficult to write<br />
* Symbolic language (like COBOL)<br />
** English-like languages used to write programs<br />
** Easier than writing programs in machine language<br />
** Must be translated or compiled into machine language to run on computer<br />
==COBOL==<br />
* Standard language<br />
* English-like, high-level language<br />
** Relatively easy to read/write/understand<br />
* Business-oriented language<br />
** Easy to produce nice looking reports<br />
** File processing capabilities<br />
** Batch and/or interactive<br />
* Structured programming<br />
==History of COBOL==<br />
* Developed in 1959 by CODASYL committee<br />
** as standard language to meet needs of business<br />
* CODASYL (COnference on DAta SYstems Languages) committee<br />
** Convened by Department of Defense<br />
** Included representative from academia, business, and computer manufacturers<br />
==Standard Versions of COBOL==<br />
* 1960's - wide variations of COBOL compilers<br />
* 1968 - First COBOL standard set by American National Standards Institute (ANSI)<br />
* 1974 - Second ANSI standard to make COBOL more efficient, standardized<br />
* 1985 - This ANSI standard incorporated structured programming techniques<br />
==Current and future standards==<br />
* 1985 currently the most widely used<br />
* 2008 is next standard<br />
** Approval expected in 2008 or so<br />
** Information on 2008 COBOL standard at [http://www.ansi.org ANSI]<br />
* Likely to remain an important language<br />
==Use of COBOL==<br />
* About 200 billion lines of COBOL source code in use<br />
** COBOL applications manage 85% of business data<br />
* 5 Billion new lines added each year<br />
* Used by 42.7% of application programmers in medium to large U.S. companies<br />
==What this course will teach==<br />
* How to design and develop application programs using COBOL language<br />
** Understand the syntax and semantics of the COBOL language<br />
** Understand various forms of data representation and structures supported by the COBOL language<br />
==Program Development Process==<br />
# Determine program specification<br />
# Design program using program planning tools<br />
# Code and enter program<br />
# Compile program<br />
# Test program<br />
# Document program<br />
==[[COP 2121 Program Development Process]]</div>Jka